Tankless Water Heater Installation & Replacement

Serving Burlington & Williston, Vermont

Tankless Installation and Replacement Services

  • Serving Vermont Since 1969
  • Premier Residential & Commercial Service
  • Your HVAC & Plumbing Professionals
  • Ask About Financing Options
  • Local VT Family Business

Welcome to A. Cooper Mechanical! We’ve been serving the Burlington area’s HVAC and plumbing needs since 1969, and we’re proud to be your top choice for residential and commercial heating services.

We provide professional tankless water heater installation and replacement services for residential and commercial spaces, working with trusted brands like Navien. With a reliable new unit installed by our pros with decades of service experience, you can always count on a smooth installation and a water heater that functions efficiently and effectively for years to come. Interested in learning more and getting started on service?

Contact us at A. Cooper Mechanical today for tankless water heater installation and replacement services at your residential or commercial space near Burlington or Williston!

One Of VT’s Only Union Contractors
One Of VT’s Only Union Contractors
Family-Owned For 3 Generations
Family-Owned For 3 Generations
Bringing Integrity & Craftsmanship
Bringing Integrity & Craftsmanship
Serving Residents & Businesses
Serving Residents & Businesses
Water heater service is a call away with Cooper Mechanical!

Navien Tankless Water Heaters We Feature & Install

NHW-160AI Premium Non-Condensing Tankless Water Heaters
Navien Tankless Water Heaters

NHW-160AI

Premium Non-Condensing Tankless Water Heaters
  • Built-in recirculation pump & buffer tank
  • NaviTech stainless steel heat exchanger and burner
  • Interior unit for indoor installations
  • NaviVent 3" x 5" concentric venting
  • Available in NG or LP
  • Cascading capable
  • Low NOx emissions (20ppm)
Get Your Quote
NPE-S2 Standard
Navien Tankless Water Heaters

NPE-S2 Standard

Condensing Tankless Water Heaters
  • ½" gas pipe capable up to 24'
  • Field convertible gas system
  • Ultra condensing efficiency
  • Dual stainless steel heat exchangers
  • Low NOx emissions (20ppm)
  • SCH 40, 2" venting up to 75'
  • Cascading capable
  • EZNav multi-line control panel
  • Built-in HotButton control panel
  • Common vent up to 12 units
Get Your Quote
NHW-160AI Premium Non-Condensing Tankless Water Heaters
Navien Tankless Water Heaters

NPE-A2

High-Efficiency Condensing Tankless Water Heaters
  • ½" gas pipe capable up to 24'
  • Field convertible gas system
  • Ultra condensing efficiency
  • Dual stainless steel heat exchangers
  • Low NOx emissions (20ppm)
  • SCH 40, 2" venting up to 75'
  • Cascading capable
  • EZNav multi-line control panel
  • Built-in HotButton control panel
  • Common vent up to 12 units
Get Your Quote

Join Our Cooper Club

No one likes their equipment breaking down, especially unexpectedly. Luckily, there’s a way to prevent surprises and keep your systems running efficiently for years and years to come: Our Cooper Club Maintenance Plans. With three tiers to help you find the service you need to fit your situation, A. Cooper Mechanical is here to help.

Brass Plan

Silver Plan

Gold Plan

Annual Equipment Inspection & Cleaning for either your boiler, furnace, air conditioner, or water heater. $50 additional for each additional item inspection/cleaning.
10-Point Plumbing Inspection for your household or business
Material charged at our cost excluding new equipment installations.
Annual Cost $200.00 $300.00 $500.00
Learn More Join Our Brass Plan Join Our Silver plan Join Our Gold Plan

Bronze Plan


Annual Equipment Inspection & Cleaning for either your boiler, furnace, air conditioner, or water heater. $50 additional for each additional item inspection/cleaning.

  • Annual Cost $200
Join Today

Silver Plan


Annual Equipment Inspection & Cleaning for either your boiler, furnace, air conditioner, or water heater. $50 additional for each additional item inspection/cleaning.

10-Point Plumbing Inspection for your household or business

  • Annual Cost $300
Join Today

Gold Plan


Annual Equipment Inspection & Cleaning for either your boiler, furnace, air conditioner, or water heater. $50 additional for each additional item inspection/cleaning.

10-Point Plumbing Inspection for your household or business

Material charged at our cost excluding new equipment installations.

  • Annual Cost $500
Join Today
Furnace Service is a call away with Cooper Mechanical!

Tankless Install & Replacement Near Burlington & Williston

A. Cooper Mechanical in Williston, Vermont offers professional tankless water heater installation and replacement services. Our team of experienced technicians is trained to handle all aspects of the installation process, from assessing your home's hot water needs to selecting the right tankless water heater for your specific requirements.

We take pride in our attention to detail and ensure that every installation is done correctly and efficiently.

If you're looking to replace your old water heater with a tankless system, our team can guide you through the process. We will carefully remove your existing water heater and install the new tankless unit, ensuring that it is properly connected to your home's plumbing and electrical systems. With our reliable and efficient service, you can enjoy the benefits of endless hot water while saving space and energy with a tankless water heater. Contact A. Cooper Mechanical today for all your tankless water heater installation and replacement needs in Williston, Vermont.

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Tankless Water Heater F.A.Q.

  • Are tankless water heaters more energy-efficient than traditional water heaters?
    Yes, tankless water heaters are generally more energy-efficient than traditional water heaters. This is because they only heat water on demand, eliminating the need for a storage tank to constantly keep water hot. This can result in significant energy savings and lower utility bills.
  • How long do tankless water heaters typically last?
    Tankless water heaters have a longer lifespan compared to traditional water heaters. On average, they can last up to 20 years or more with proper maintenance and care. This is significantly longer than the 10-15 year lifespan of a traditional water heater.
  • Can a tankless water heater provide enough hot water for my household?
    Yes, tankless water heaters can provide a continuous supply of hot water for your household. However, it is important to choose the right size unit for your needs. Factors such as the number of occupants in your home and your hot water usage patterns should be considered when selecting a tankless water heater.
  • Do tankless water heaters require regular maintenance?
    Yes, tankless water heaters do require regular maintenance to ensure optimal performance and longevity. It is recommended to have a professional service your tankless water heater at least once a year to clean the unit, check for any issues, and perform any necessary repairs or adjustments.
  • How much does it cost to replace a traditional water heater with a tankless water heater?
    The cost of replacing a traditional water heater with a tankless water heater can vary depending on various factors, such as the size and type of unit, installation requirements, and any additional plumbing or electrical work needed. It is best to consult with a professional plumber or HVAC technician to get an accurate estimate for your specific situation.
Financing is available

We Offer Financing

We know that upgrades or repairs can be costly, but they don’t have to be. We’re proud to offer financing to help you break down costs so you can stop worrying about finances and enjoy the benefits of top-quality service.

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We Support Children's Programs

We Support Children's Programs

As a multi-generational, family-owned business we value family, and know how important education and enrichment are to a healthy childhood. We are proud to offer children’s programs to support the next generation.

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 Vermont Gas Services

Equipment Rebates with Vermont Gas

We may not directly offer rebates, but our partners at Vermont Gas provide several residential equipment rebates. Not only do you get money back for installing energy-efficient systems, but your increase your home’s efficiency and reduce your impact on the environment. We call this a win-win.

Learn More

Our Featured Specials

We’re happy to offer seasonal specials on our services and products.

$10 OFF Boiler Inspection

$10 OFF
Boiler Inspection

Don't let your boiler fail this winter.

Contact Us
15% OFF Drain Cleaning

15% OFF
Your Next Drain Cleaning

Enjoy a clear drain for less.

Contact Us

Our Brands

Mitsubishi Diamond Contractors
Bradford White
Ecoer
Fujitsu
Rheem
Mitsubishi Diamond Contractors
Bradford White
Ecoer
Fujitsu
Rheem

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